Well, the efficiency warranty is usually at least 80% until 25 years, so 10 years seems a bit short. If there are enough of them, recycling can be made efficie

Well, the efficiency warranty is usually at least 80% until 25 years, so 10 years seems a bit short. If there are enough of them, recycling can be made efficient, and disposing of them would in any case be easier than for the spent yet radioactive materials. If we wanted to we could even enclose in glass container the nasty stuff, and it would not decay its container at nearly the same rate as the radioactive stuff.